Hauling vehicle



Aug. 19, 1947. J. T. ROGYERS 2,425,953

HAULING VEHICLE Filed Dec. 18, 1945 2 Sheets-Sheet 1 In vexnfov 3311] 05 T. RO CMAS 1947- J. T. ROGERS 2,425,953

HAULING VEHICLE Filed Dec. 18, 1945 2 Sheets-Sheet 2 I11 Um'fl'ov gamesT. Ro cm'rs Patented Aug. 19, 1947 UNl'l'ED STATES PATENT OFFICE HAULINGVEHECLE James T. Rogers, Nashville, Tenn, assignor to RogersManufacturing Company, Inc., Nashville, Tenm, a corporation of TennesseeApplication December 18, 1945, Serial No. 635,713

Claims. 1

The present invention relates to vehicles for hauling rock, ore, soil orother heavy material, and having provision for dumping the contents fromthe body thereof.

The construction includes a pivoted truck or dump body, with togglemeans actuated by a suitable source of power to pivot the body todischarge the contents. The invention is an improvement over suchvehicles of the prior art in the simplicity and ruggedness of themechanism provided to tilt the truck or dump body.

In the prior art, various types of toggle arrangements have beenprovided to elevate a vehicle body for discharge purposes, but thearrangements of the toggle mechanisms are usually such that specialmeans must be provided to initially elevate the truck body around itspivot before power can be effectively applied to the toggle pivot point.

The present invention distinguishes in important respects from the priorart in the ruggedness and compactness of the elevating mechanism. Themechanism is arranged to operate entirely within the longitudinal framemembers of the chassis, and to drop substantially below the chassis whenthe dump body is in its normal or hauling position. A compact and ruggedconstruction is thus provided having a low center of gravity, giving thevehicle pronounced stability even when the dump body is elevated.

In the drawings, which are illustrative of the preferred form of theinvention:

Figure 1 is a side elevational view of a truck body with the dumpingcompartment in its normal hauling position.

Figure 2 is a similar view showing the toggle mechanism in its actuatedposition with the truck body elevated to discharge the contents.

Figure 3 is an enlarged top plan view of the truck in the dumpingposition of Figure 2 with the dump body omitted.

Figure 4 is an enlarged end elevational view of the truck also in thedumping position of Figure 2, but with the dump body omitted.

The truck consists of a chassis l9 (Fig. 1) having spaced longitudinalframe members l2 and I l (Fig. 3), the chassis being carried by Wheels116 in any conventional manner, and having a dump body 88 pivotedadjacent its rearward end to the rearward end of the chassis as at 20.Referring to Figure 3, the forward ends of the longitudinal framemembers l2 and i l of the chassis join together in a platform 22 fromwhich a central draft beam member 24 extends forwardly for attachment toa tractor.

or the like employed to haul the truck, suitable connecting means 26being provided on the end of the beam 25. When in normal position, thelower side frame members of the dump body rest between side supportinglugs 27 secured to the frame members l2 and M and extending upwardlytherefrom.

Depending from each of the frame members l2 and I l adjacent theirforward ends are shaft brackets 32, and extending laterally betweenthese brackets is a fixed transversely extending shaft 3 to which ispivoted the forward end of a first toggle link '35. This toggle link isplate like in form, of heavy construction for purposes of strength, andits sides taper inwardly and rearwardly as shown in Figures 3 and 4.

The forward and wider end 31 of link 36,has an end bearing openingextending throughout its width where it embraces the shaft 34, and therearward and narrower end of the plate is provided with a similarbearing opening throughout its width to embrace the toggle pivot aslater described.

Referring to Figure 1, it will be noted that when the dump truck is inits normal hauling position, the first toggle link member 36 extendssubstantially horizontally and rearwardly from the fixed pivot shaft 36,and below the chassis it. The second toggle link comprises a pair ofspaced arms 39 and Ml, each of these arms being pivoted at their upperends to short pivot shafts 32 suitably carried by the inner faces of theframe members of the dump body. The pivots 42 are so positioned that thesecond toggle link members 39 and 49 form a vertical angle of substantially with the toggle link 3'5 when the dump body is in its normalor hauling position, as shown in Figure 1. It will also be noted inFigure 3, that the second toggle link members 39 and ll] are alsopositioned for movement between the side frame members I2 and i l of thechassis. Members 39 and it are pivoted at their opposite ends to atoggle pivot shaft 44. As shown in Figure 3, the rearward bearing end 38of the first toggle link 35 centrally embraces the pivot shaft fi lthroughout a substantial portion of its length, while toggle linkmembers 39 and ll? are pivoted at the opposite ends of the shaft 34.

The toggle is actuated by a pulling arm or yoke 5 which is pivoted atits rearward end to the toggle shaft 64 and is provided at its forwardend with means to connect with a suitable. source of power. As shown inFigure 3, the pulling arm 45 is of yoke like construction, beingbifurcated at its rearward end to form arms 48 and 55, these armsrespectively carrying suitable bearing sleeves 52 and 53 which embracethe toggle pivot shaft 44 on opposite sides of the bearing end 38 oflink 36, and between the same and the forward ends of the link members39 and 40. It will be apparent from Figure 3 that the pulling arm 45 isalso, positioned for movement-between the longitudinal side'framemembers l2 and M of the chassis, and that the bifurcated forward end ofsaid arm straddles the first toggle member 36 adjacent the togglepivotsshaft M during movement of the toggle.

Mounted on the platform 22 ofithe chassis forwardly of the togglemembers previouslyldesc'ribed and extending upwardly from the platform22; is a fixed standard or post-5.4. Thi standard -is adapted to receivethe application of power from any suitable source to lift the dump body.It may be provided with a sheave housing 56 with sheaves 58 mountedforrotation on a suitablefixed shaft "carriedby the housing. Referringto-Figures 2 and 3,- the forward 'endof thepullingarm 46 is similarlyequipped with a sheave housing 50' carrying a hired shaft and sheavesfiz-mounted' forrotation thereon. As shownin' 'Figure 2;-a-cable 64extends from a suitable-source'of power (not shown) such asa winding andunwinding power reel or dlum' n atractor-or-the like and is trainedthrough the respective sheaves'fifiand 62 in amanner-well known'in theart: and suitably 'secured'at its terminal end. The cable 64 thusprovides a flexible power connection-between the fixed sheave housing 56and 'the sheave housing -60 on theforward endof thepulling arm-H6.

When the-dump truckis-in'normaror hauling -position, as shown'in Figure1, the pulling' arm 46 extends from the toggle-pivot ld in the di--rection-of the sheavehousing 56,=and--in this position, it bisects "theverticalangle form'ed by 40 the'toggle links=36and 39310. "-The forwardlower 'corner of the dump -body'-may=-begrooved as=at 61 if necessary,in order to clear the pullingarm When power is applied to the truck-bywinding --in cable 64 and actuatingsheaves 58-af1d62 the pulling arm 36is moved from the position shown 'in Figure l to that of 'Figure 2.*Byreasonwf the flexible power connection "between sheave just 'short ofdead centersand it :iormsw a: rigid connection to the toggle' from thefixed standard 54- on the chassis. It will beiunderstoodtxthat the powersource for thecable'fitl \willzbe equipped -to"hold the cable :taut sothatfthetogglaandzits pulling. arm may :retainsthe :agigid 1"connection.

'shownin Figure: 2, and-Kat this itime ilthexcdump truck -maybetvibrated in anyrsuitable: manner to discharge its contents. Byreasoni of the position of the standard 54, and the length of thepulling arm 46,1 the actuated position of the toggle is short ofdeadcent'er; 'as previously' mentioned, and when the pul1'0n'the cable64 =is' released, the weight of" the" dumpbody and-"connecting memberswill move the: toggleflinks: toward their normalpositionof' Figure 1.

5 may be held in any intermediate position if desired.

It will be apparent that I have provided a dump truckv and operatingmechanism therefor of simple and rugged construction, and which can.10.be actuated without the necessity for special "means to accomplishinitial lifting movement of '.-.the1dump body around its shaft. Byreason of the position of the toggle link pivots 34 and 44 "below thelongitudinal frame members of the *chas'sis'in thewnormal position ofthe dumping body, as shown in Figure 1, and the arrangement .eofrthe'pivot.pointslAZ so that toggle links 39 and 40 form a substantial anglewith link 36 at the normal position of the dump body, power can beapplied through the pulling arm 46 to immedi'ately actuatethetoggle andstart the dumping-body'in its -m'ovement" around the 'pivot-20. "Theconstruction 1 described herein issuch that the power applied isevenly-distributed and a un'iformlift-on bothsidesof' the dump body isaccomplished. "'Of :primaryimportance =is the :multi'ple fun'ctiomofthe-pulling arm lfipwhich serves as a power connection-between thestand- .-ard :54 andthe toggle shaft 6 s; as a rigidcOnnne'cting-Jarmto'holdandsupport the dump body innitselevated or dis'charging positionand as a spacing member to retain the-'tog'gle short of deadivcenter so.that thetdump bodywill easily :lowerzby gravity when tension on thecable is relieved.

.Iblaim: 1 1. In a dump v'ehi'cle, a chassis having spaced longitudinalframe members, a dump body pivoted at its rear portion to the rear ofsaid chassis, a lrearwardly extending first toggle link pivoted abetweensaid frame members and'lyingin a-s'ub- .-ustantiallylhorizontalplanewhen the dump'body adsiinanormal position, asecond toggle linkpivoted ato'. the rearward end ofzsaid tfirst .link' and to the radumpibody vat suchripoint .thatJit forms 7 a substantiaLangle with saidfirstiink-when the dump ;.:body is in normal :position;.a standardpositioned .-on "said: chassis 1 above said frame tm'embers and1forward-of-saidlinks, a pulling; arm pivotally connectedaatzits.rearward-end.- to the pivot :be-

tween said :linksi-and.;extending.1in a .direction bisecting theangle'betweenthe san1e,.and:means for moving saidpullingarmzin-aforwarddirec- -.tion 'to'open the angle between said links and toelevate the dump body including sheave: and cable z-connections betweensaid standard and the. forward=end-ofssaid pulling arm, said standardand the rearward end-of saidppullingarm Lhaving -abutments to'engage'one another when the dump -body is. completely elevated,thepositionof the abutment on said standardiand thelength of said.pulling-iarm being such that said ipulling arm formsa rigid connectionbetween said standard and the pivot betweensaid links when the dumpvbodyis elevated to such a degree that said toggle links-are just-shortofdead center.

12; i[n..a dump vehicle, achassis having spaceda'longitudinal"framezmembers, a dump -'body =pivi 'otedr'at its rearportion-to the rear ofsaid chassis,

*a rearwardly extending first' toggle link' pivoted to the chassis'belowsaidframe members and lying in a substantiallyhorizontal"plane whenthe idumpbody is in normaliposition, a second toggle linkxpivotedto therearward end of said'first link and to the dump body at such point thatit forms an angle of substantially 60 with said first link when the dumpbody is in normal position, a standard positioned on said chassis abovesaid frame members and forward of said links, a pulling arm pivotallyconnected at its rearward end to the pivot between said links andextending in a direction bisecting the angle between the same, and meansfor moving said pulling arm in a forward direction to open the anglebetween said links and to elevate the dumpbody including sheave andcable connections between said standard and the forward end of saidpulling arm.

3. In a dump vehicle, a chassis having spaced longitudinal framemembers, a dump body pivoted at its rear portion to the rear of saidchassis, a rearwardly extending first toggle link pivoted to the chassisbelow said frame members and lying in a substantially horizontal planewhen the dump body is in normal position, a second toggle link pivotedto the rearward end of said first link and to the dump body at suchpoint that it forms an angle of substantially 60 with said first linkwhen the dump body is in normal position, a standard positioned on saidchassis above said frame members and forward of said links, a pullingarm pivotally connected at its rearward end to the pivot between saidlinks and extending in a direction bisecting the angle between the same,and means for moving said pulling arm in a forward direction to open theangle between said links and to elevate the dump body including sheaveand cable connections between said standard and the forward end of saidpulling arm, said standard and the rearward end of said pulling armhaving abutments adapted to engage one another when the dump body iselevated, the position of the abutment on said standard and the lengthof said pulling arm being such that said toggle links are short of deadcenter when said abutments engage one another.

4. A dump vehicle of the character defined in claim 1 wherein the togglelinks and pulling arm are all mounted for movement between the spacedlongitudinal frame members.

5. A dump vehicle of the character defined in claim 1 wherein the firsttoggle link is a plate like member, the second toggle link comprisingspaced arms positioned on each side of the rearward end of the platelike member at the pivot point between said links, and wherein thepulling arm is bifurcated adjacent its rearward end and straddles theplate like member at said pivot point.

JAMES T. ROGERS.

